10 Man Naxx vs 25 Man Naxx Boss HP
Disclaimer: Please read the whole post carefully before replying! I'm not criticizing the fact that boss HP is being scaled. I'm strictly discussing the relative amount of scaling in 10 man vs 25 man.
I've noticed that 10 man Naxx boss HP is 250% to 350% greater than retail numbers (varies depending on the boss) and 25 man Naxx boss HP is only 100% greater than retail numbers.
You generally have 6 DPS in a 10 man raid. You generally have 16 or 17 DPS in a 25 man raid PLUS additional buffs.
So, for example, assuming tank dps is half as good as regular DPS and a raid has 6 DPS and 2 tanks:
Retail 10-Man Patchwerk HP: 4,322,950
Retail 10-Man Patchwerk DPS requirement/Person: 2058 DPS/Person
Lord 10-Man Patchwerk HP: 10,807,375
Lord 10-Man Patchwerk DPS requirement/Person: 5146 DPS/Person
For 25 man, assuming 2 tanks, 6 healers, and 17 DPS:
Retail 25-Man Patchwerk HP: 13,038,575
Retail 25-Man Patchwerk DPS requirement/Person: 2414 DPS/Person
Lord 25-Man Patchwerk HP: 26,077,150
Lord 25-Man Patchwerk DPS requirement/Person: 4829 DPS/Person
Notice how in retail Blizzard had it set so that the per person DPS requirement in 25 man raids was higher than in 10 man raids. This makes sense since you tend to have more buffs available in 25 man raids so people naturally do a bit more DPS.
However, with current numbers you need more DPS per person in the 10 man raid than the 25 man raid. This doesn't seem correct to me.
The discrepancy is even more significant on fights like Anub'Rekhan, who are scaled by 350% higher than retail while 25 man still only scales 100% higher!